Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca48724a763308e0…

MALICIOUS

PDF

46.0 KB
MD5: 65d7fff3ac4ea27a2c03eaa28c9c9454 SHA-1: aa42e8e4a26ff3e738e85bed49a522f0c0071004 SHA-256: ca48724a763308e02709e3ff3c5f03a3e3966915479af3c43f2748de142476a6
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' further supports its malicious nature. While the document body is heavily obfuscated and unreadable, the presence of JavaScript suggests it's designed to execute malicious code, likely downloading and running additional payloads. The embedded URLs, though not directly malicious, are related to XFA forms, which are sometimes used in PDF exploits.

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
819645abbc7b5fcd2359a890743f5d21348afca59a7966c4424dc70abb23e867		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1E5 4312 bytes

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